Uncaught SoapFault Exception about amazon-ecs-php-library

[Exeu]

Hi,

which version are you using?

[markdwhite]

v1.3.1...aha, we're now at 1.3.2...

I can only see new locales and code cleanup. Is there any other potential benefit from upgrading? I'll have to wait through a release deployment cycle to know if it does solve the issue if I do upgrade.

[Exeu]

No there is no benefit only the locale has been added.

I tested the lookup functionallity with version 1.3.1 and there are no problems for me.
So currently im not able to reproduce this error you're getting.

The function call youve implemented is correct:
$response = $amazonEcs->responseGroup('Large')->lookup($ASIN);

Interesting is the first part of the StackTrace:

PHP Fatal error: Uncaught SoapFault exception: [HTTP] Not Found in /var/www/booklending/lib/AmazonECS.class.php:229\nStack trace:\n#0 [internal function]: SoapClient->doRequest('<?xml version="...', 'https://webserv...', 'http://soap.ama...', 1, 0)\n#1

Could you try to get some more information according to the URLs which are displayed there?
Maybe there is the error.

And could you also try to test the class on your system with the sampleItemLookup.php ?
Is there also an Exception Thrown when you run this example file?

Thanks

[markdwhite]

Thanks for following up.

I'd increased the logging and have a little more information. The code centers around some page scrapers which are being run regularly. Usually, this particular one runs in less than a minute. The webserver access logs show that it actually took 2 mins to return. Could this possible be a timeout error?

AmazonECS is being instantiated in the standard way, using constants, like so:
$amazonEcs = new AmazonECS(AWS_API_KEY, AWS_API_SECRET_KEY, 'com', AWS_ASSOCIATE_TAG);
$amazonEcs->setReturnType(AmazonECS::RETURN_TYPE_ARRAY);

I can provide any information that might help to track this down, but I'm unsure how to best do this. Should I just dump $webserviceWsdl and $webserviceEndpoint to a logfile before #229 "return $soapClient->__soapCall($function,array($params));". or would you suggest something else.

No problems when I use sampleItemLookup.php, and this has been my only test so far - to take the ASINs that caused the error and test them in sampleItemLookup.php to see if they are causing the error to be thrown. And they don't. But this is a very occasional error - I'm calling this method thousands of times during the day, and yesterday saw just two of these errors.

So what should the best next steps be to help?

[Exeu]

Hm..
Its possible that this is a timeout error.
Maybe the Webservice is so milliseconds not available for some reasons and this is why the request fails.
But i'm not sure.

It is very difficult to reproduce that.
Maybe try to refetch the product information when it fails by catching the exception and restart the procedure?

[markdwhite]

I understand it's not an obvious one...

So are you suggesting something like this? If so, sounds reasonable...

try {
$response = $amazonEcs->responseGroup('Large')->lookup($ASIN);
} catch (Exception $e) {
// Dump $e to log with retrying message
try {
$response = $amazonEcs->responseGroup('Large')->lookup($ASIN);
} catch (Exception $e) {
// Dump $e to log with failed message
}
}

[Exeu]

Yes something like this.

If your running the product Lookup in a loop try to use the sleep function between the requests.
Maybe this also could help.

[markdwhite]

Sounds good. Thanks for following this one through - it's much appreciated